Skip to content
Create a gist now

Instantly share code, notes, and snippets.

Embed URL


Subversion checkout URL

You can clone with
Download ZIP
var callbacks =
function (letter) {
// or some expensive computation
return letter;
return callbacks.reduceRight(function (otherwise, callback) {
var letter = callback();
if (letter === "h") {
return letter;
} else {
return otherwise();
}, function () {
throw new Error("Can't find H");
| | | | | | |
v v v v v v v
a b c d e f g

This was linked from the Q library examples. I'm not really sure how this solves the problem of breaking out of a promise chain. Can you explain?

Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
Something went wrong with that request. Please try again.